Demountable rim for pneumatic tires.



W. E. GOPITHORN.

DEMOUHTABLE RIM FOE BNEm-amm TIRES.

APPLICATION FILED FEB 8, 1912.

I Lal/mn w. E. GOPITHORN. DEMOUNTABLE HIM FOR PNEUMATIC TIRES. APPLIQAIION FILED FEB, 8,1912.

I 3 SHIIETSSHEET 2.

GQPITHGRN,

nmmmmsm MM F01! PEEUMATIG TIRES.

A'JEELIOATIOH FILED FEB. 8, 1.912.

Patented June 16, 19M

3 SHEET8BHHIIT 3.

*llIlZ-"FMTES PATENT OFFICE.

E. COIPITHO'BN, OLE NATIGK, MASSACHUSETTS. DEMOUNTABLE RIM FOR PNEUMATIC TIRES.

,i kineeiification of Letters Patent Patented June 16, 1914.

Application filed February 8, 1912. Serial No. 676,233

h did in om it may 0011mm lie it known that 1, Quinn E. Corr- "only; u citizen of the United States, residut l l'atick, county of Middlesox, State of hu sotts have invented an improve 1n. li emountuble Rims l'or Pneumatic of which the following description, I motion with the accompanying draw- 13 a spe' fioation, like characters on the r rhpresentii'ig like parts. i

Thisinvention relates to deinountable rims pneumatic tires and it has for its gel; to provide s ovel and simple device for ioldinp; and locking the demountsble min in place on the whee The features wherein my invention resides will he more fully hereinafter described and then pointed out in the appended claims.

Rehn'ring to the drawings wherein I have i some preferred embodiments" of 'j, invention, higure l is a side View of a i oil having my improvements applied 2 is on enlargedsection on the 1.; Fig. '3 is an enlarged sec- 'on on the line e y Fig. 1; Fig. 4 is an enfroginentsryfview showing the vmonnor in whi h. the locking ring is applied to is Fig, is a side View of the oneng ring removed Fig. 6 is a frugv I 153W showing the operation of the cone member in the slot 18; 7 is s View For to Fig. Tia-showing in /invention enried i two-part loekingring; Fig! 8 is one of the 'sectiorlsof thot apart ie other Fig.0 a View of ti 1 10 15 an en- M u i 1. l ---a, Inge t, Fig.

.L section on the line 133; H is section on'the hue any suitable or usual eonstrnm which is provided with the usual n herein my invention as eml in u den'iountulole rim for pneumatic end also 1: demountable him for solid rshhtnf tires.

ieiierrlngr first to the pneumatic tire const notion, 3 designates a denioun'table rim adopted to sustain the pneumatic tire l. Tl H rim and tire may have any suitable or usual construction, that herein shown being the welldinown cleneher type. The perthe body of :1 wheel which the felly 2. The

rim, however, does not enter into the invention. I

The folly 2 has secured to one side thereof a positioning ring which is provided with a positioning flange to engage the demountable the letter on the folly.

7 designates a ring which is secured to the opposite side of the folly, said ring being herein shown as provided with the inturned flange 8 which occupies a rabbet formed in positioning ring 5 and the ring 7 may be permanently secured to the tire in any suitable Way. I have herein shown for this purpose bolts 9 which pass through-the folly and which have heads 10 to engage the ring 7, and which are royided with nuts 11 to engage the positioning ring 5. The positioning ring 5 and the ring 7 are intended to be permanently tened to the felly 2.

The dcmountable rim 3 is held in position by 11 looking ring 12 which may either he a one-piece ring or may be made in two parts, as desired, and which has locking engagement with the heads 13 of studs 14 that are secured to and extend lot-erolly from the folly 2. These studs 14 may be secured in place in any suitable way. In the embodiment of the invention shown in Figsl to 6 said studs are formed as part of the bolts 9, that is each bolt is puovidedwith .an ex tension beyond the head 10, which extension is shaped to present a stud 14 having a head 13. The locking ring shown in Fig. l is a onepieee locking ring and itis provided with at body portion which overlies the ring 7 and with a flange portion 15 which engages the deniountable rim 3. 1 The onepiece looking ring is shown in Fig. 5, and it is provided with a. plurality of slots 16, one for each of the headed studs Said slots have :1 progressivelydecreosing width from one end to the other, and at their-Widestend permit the heads 13 of rim and position they are of a size to the studs to pass through them, as shown in ig. l. In. applying the, locking ring it is placed over the studs with'the heads 13 thereof 6 that is adapted this position the portion 17 thereofi on each side of the narrow'end of the slot lies behind the head 13 so that the rin is firmly held in place. This movement ing ring into its operative position is provided for by means of a Wedge member which is herein shown as in the form of a cone actingin a tapered slot 18 formed in the ring and tapering in the opposite direction from the slots 16. The cone member is shown at 19 and is in the form of a nut which is screw-threaded onto a bolt 20 that is anchored in the folly 2. When the locking ring 12- is first placed over the headed 15 studs, the bolt occupies the narrow end of the slot18, as shown in Fig. 6. As the cone member 19'is screwed onto the bolt and the cone enters the slot 18 it forces the locking ring around into its locking posi- 20 tion shown in Figs. 1 and 4:, as will be obvious. Said cone, therefore, not only moves the locking ring into its locking position, but it also holds it in such position. The removal of the demountable rim 3 involves merely unscrewing the cone-shaped nut 19 and then shifting the locking member 12 so to bring the heads 13 opposite thelarge portion of the slots and then moving the locking rim laterally. "he placing of 80 llie locking riot in position involves merely i erting it over the headed studs and then screwing the cone-shaped nut 19 into place. Tnstead of making the locking ring in one piece, as shown in Fig. 5, I may make it in two parts, as shown in Figs. 7 to 11, inclusive. In this embodiment be two parts of the locking ring are designated 2]., 22, each being substantially semi-circniar in shape. Each is provided with the tapered slots 16 adapted to fit over the headed studs '11, as above described. One end of each of the rings i provided with a notch 25 to ente -behind the head 23 of a stud 24: which is secured to the telly in any suitable way, preferabl by beingformed on the end of one of the clamping bolts 9. At the other end the ections of the locking ring overlap each other and the section 22 is provided with a slot 26, while the section 23 isprovided with a tapered slot 27 which tapers in the opposite direction from the slots 16, and the larger end of which is beveled, asshown at 28. In applying this sectional locking ing to th wheel the two sections are placed 66 in. position over the headed studs 13 with the notches 25 in the ends thereof situated to enter behind the head 23 and with the end of the bolt 20 passing through the slots 26, 27. lhe cone-shaped nut 19 is then screwed onto the bolt 20 and as it enters the tapered slot 27 it forces the'section 21 in the direction of its length to cause the narrow ends of the slots to enter behind the heads 13;) During the forward movement of the 1 w ,nut 19 the small end thereof enters the slot the lock-' 'held in place by a tapered ma- 26 and engages the end thereof and forces the ring section 22 longitudinally thereby to lock said ring behind the heads of studs. lhe cone 19, together with headed studs 14, series firmly hoio locking ring sections in place and the lo. ing ring sections hold the demonntahie rim in position. I have shown. herein ad "one? rivets or bolts 31 near the outer edge rings 5 and 7 for securing them to to I My invention may also be e g-pile. dcmountable. rim constructed to sesta' solid rubber tire, shown in l iga 12 13. In this embodiment of the invention. the hard rubber tire i shown at F52 and i is secured to a deinountalide rim 33 in some suitable way. 'Ihe-manner oi :ronnecth the tire to the rim may be varied \w'iihcnt departing from the invention, i ill aninn one construction i have shown said iii. 2"

lit

as having a wire 3-iembedded therein, hiuh wire is connected to the rim 32,- by eyo-iiolts 35 arranged with the wire 34 n J through the eyes, said bolts passing;- through the rim 33 and being connected therolo by w nut 36. In the embodinn-nl shown in lr'igs, 12 and 13 the telly 2 has secured. to ne side thereof a positioning rim; 3? which is pro vided wvith a. flange 38 to engage the rim 33 and the side oi the liri and on he op mo site ide is a clamping; ring, 39 similar m shape to the ring 3-7, but remorably held in place. The clamping; ring is held in i: (ion by a locking ring 40 which may sit] be a one-piece. locking ring or t \ori locking g. as desired. This lor in I is provided Wilhthe tapered slo scribed above and these slots ar ax enter over and he held behind of studs -11 which are seourmi [0 the 2 in some suitable Way. 1 have shown said studs 41 as being formed in with bolts -13 which are fastened to the band 44: and are situated exterior the said bolts 43 extemling through the osnion in ring 37 and being shown the folly band by rivets 46 designates bolts or rivets wl through the telly 2 and the positior 37 and serve to permanently amino"? parts. in'this embodiment the derim 3?! is sufficiently larger than band at to provide the neeessan receive the boits 43. The lockin threaded onto a bolt 20, as above A and if the locking ring 1-0 is a onesaid nut operates in a tapered slot in the locking ring, as shown in while if the locking ring 4.23 ring, then it wid. have the eonstru shown in Figs. 8 and 8'.

I have herein shown the s ots formed in the iooaing ri Q i siots, but this particuiar constructive is not ,a

necessary as the slots are primarily openings to receive the heads of the studs and the locking ring has such a shape adjacent these openings that when said ring is turned annularly, portions of the ring pass behind the heads of the studs, thus locking the ring in place. \Vhere the ring is made of one piece it is moved anhularly as an entity to bring it into locking position. \Vhere the locking ring is made in two sections, each section has a separate movement, but the movement of each section is annularly so that by the term annular movement of the locking ring 1 inean a movement annularly whether the locking ring is made in one section or two.

It will be obvious that various changes may be made in the cimstructional features of the invention without departing therefrom.

Having fully described my invention,what 'l claim as new and desire to secure by Letters Patent is 1. In a wheel, the combination with a wheel body having a telly, of headed studs extending laterally from one side thereof, a demountable rim encircling the folly, a locking ring for locking said demountable rim in place, said lockingring having slots wider at one end than at the other, said slots at their widest ends having a suflicient width to pass over the headset the studs, and a c ne nut co-acting with said locking ring to tor-fie it positively in the direction of the length ol the slots thereby to bring the narrow portion= of said slots behind the heads.

2. The combination with a wheel body having a folly, of headed studs extending laterally trom one side thereof, a dcmountable rim encircling the'felly, a locking ring having slots of progressively .lecreasing width from one end to the ther, said slots at their widest ends havin; a sullicient width to pass over the heads o'l? the studs, said ring also having another tapered slot which tapers in the opposite ,lirection, from the firstnamed slots, and a wedge member to enter said latter slot and move the ring into its locking position.

3. In a wheel, the combination with a presenting at one end headed studs which ex tend laterally from the felly, a demountable rim encircling the folly, a locking ring for said demountable rim adapted to have locking engagement with said headed studs, said locking ring having a cone-receiving slot of progressively-varying width, a bolt extending transversely through the folly and said latter slot,'a coneshaped nut screwthreaded onto the bolt and entering said slot thereby to cause said locking ring to move in the direction of the length of the slots therein so as tobring the narrow portions of said slots behind said heads.

4. In a wheel, the combination with a wheel body having a felly, of a rim-position ing ring overlying one side of the telly, bolts extending transversely of said felly and ring for securing the latter to the folly, said bolts presenting at one end headed studs which extend laterally from the opposite side of the telly, a demountable rim encir- (-ling the folly and engaging the rim-positioning ring, and a locking ring for said deinountable rim, said locking ring having slots of progressively-decreasing width from one end to the other, said slots at their widest ends having a sullicient width to pass over the heads of the studs, and said locking ring also having a cone-receiving slot of progressirely-varying width, a bolt .extending transversely through the folly and said latter slot, and a cone-shaped nut screwthreaded on said bolt and entering said slot thereby torause the locking ring to be moved in the direction of the length of the slots therein and to he brought into locking engagement with the headed studs.

In testimony whereof, I have signed my name to this specification, in the presence of: two subscribing witnesses.

Witnesses Louis C. SMITH, 'lnonws .l. DRUMMONI). 

